If, a month ago, you had asked me to explain this financial product, I would probably have muttered something about horse-racing, jam and margarine and then run away.

• 如果一个月前你让我解释对赌这种金融产品，我或许会跟你支吾一通，用赛马、酱、造黄油之类的话来应付，然后溜之大吉。